210130243 has 4 divisors (see below), whose sum is σ = 210164328. Its totient is φ = 210096160.

The previous prime is 210130223. The next prime is 210130267. The reversal of 210130243 is 342031012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210130243 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (210130223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4921 + ... + 21082.

It is an arithmetic number, because the mean of its divisors is an integer number (52541082).

Almost surely, 2^210130243 is an apocalyptic number.

210130243 is a deficient number, since it is larger than the sum of its proper divisors (34085).

210130243 is an equidigital number, since it uses as much as digits as its factorization.

210130243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34084.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 210130243 is about 14495.8698600670. The cubic root of 210130243 is about 594.5150515045.

Adding to 210130243 its reverse (342031012), we get a palindrome (552161255).

The spelling of 210130243 in words is "two hundred ten million, one hundred thirty thousand, two hundred forty-three".